Ford keeps a small fleet of Model T’s running in Dearborn for visitors to ride. Last time I was there I think it was $5 for a ~10-minute ride. Each Model T is driven thousands of miles over the course of 350+ days per year.

If a dealership needs to know how to do maintenance or get a part, they just need to call Ford HQ. The person I talked to said that they actually run better now than they did back then because all the maintenance items are made from modern materials.